Antiskid device



Nov. 22, 193%.

P. E. WIMMENAUER 2,137,935

ANTISKID DEVICE Filed Dec. 16, 1937 2 Sheets-Sheet 1 Invenim Paw/E 14 5mm end/we,

pmwm X1 iiorneys Nov. 22, 1938. P. E. WIMMENAUER ANTISKID DEVICE 2 Sheets-Sheet 2 Filed Dec. 16, 1937 Inventor 732w! E mmmencuoer Patented Nov. 22, 1938 UNITED STATES ANTISKID DEVICE Paul E. Wimmenauer, Washington, Ind.

Application December 16, 1937, Serial No. 180,253

1 Claim.

My invention relates to improvements in antiskid devices for attachment to the soles of shoes to obviate slipping on icy pavements or other slippery surfaces.

The invention is designed with the particular purpose in view of providing an efficient, durable and inexpensive attachment of the character above indicated which may be quickly and securely attached to shoe soles and detached therefrom, made in different sizes to fit different sizes of shoe soles and will not mar or otherwise injure the shoe sole to which it is attached.

To the accomplishment of the above and subordinate objects presently appearing a preferred embodiment of my invention has been illustrated in the accompanying drawings, set forth in detail in the succeeding description, and defined in the claim appended hereto.

In said drawings:

Figure 1 is a view in side elevation of a shoe equipped with my improved anti-skid device,

Figure 2 is a view in bottom plan,

Figure 3 is a View in perspective of one of the calks,

Figure 4 is a view in top plan of the device detached,

Figure 5 is a view of the stud for the coupling shown in perspective,

Figure 6 is a similar view of the bracket for connecting the coupling to the auxiliary sole, and

Figure 7 is a view in perspective of one of the toe clips.

Referring to the drawings by numerals, the anti-skid device of my invention comprises an auxiliary half-sole I for attachment to the bottom of a shoe sole and which may be made of any suitable material such as composition rubber, leather, or the like, in the different contours and sizes of the soles of different sizes of shoes to fit flush thereagainst. The auxiliary sole is provided with a plurality of stud-like calks 2 extending from the bottom thereof and arranged preferably in transversely extending rows in any desired spacing in each row suitable to prevent slipping. The calks 2 are a particular feature of my invention. Each calk 2 comprises a tubular longitudinally split shank 3 extending through the auxiliary sole I, a circular flange 4 abutting the bottom of the sole I and a ground engaging solid cylindrical spur 5. The shank 3 is riveted in the usual manner on the upper side of the sole I over a burr 6 indicated in dotted line in Figure 4. Preferably the described calk 2 is formed by a split copper rivet comprising the shank 3 PATENT OFFICE brazed to the head of a cut-off nail forming the flange 4 and spur 5.

The auxiliary sole I is detachably secured to the sole I of a shoe as follows. A pair of toe clips 8 of resilient flat metal are secured to the 5 top of the auxiliary sole I, as by copper rivets 9, to extend forwardly from the toe III thereof upon opposite sides of the longitudinal center of said sole I, said clips 8 having hooked front ends 8' adapted to take rearwardly over and grip the toe 10 part of the shoe sole I upon opposite sides of said toe part. At the rear edge III of the auxiliary sole I, which is made straight, is a tubular bracket I I secured along said edge ID by means of cars I2 extending from the same adjacent opposite 15 ends thereof, respectively, and riveted, as at III, to the top of said sole I. Extending from the bracket II is a bail-like coupling I4 of resilient wire and bellows-like form having at one end thereof opposed terminal legs I5 journalled in 20 opposite ends of the bracket I I, zigzag sides I6, and a loop I! at its opposite end. The coupling I4, as will be understood, is adapted to lie flat in the instep part of the shoe and to be connected thereto in a tensioned condition to pull the clips 25 8 tight and anchor the device in fixed position. For connecting the coupling I4, a headed stud I8 is secured to the instep part of the shoe sole I, said stud I8 having a base plate I9 nailed, as at 20, to said shoe sole I.

As will now be seen the described coupling I4 exerts a tension against the auxiliary sole I rearwardly and sufiicient to retain the clips 8 in posi-- tion and together with said clips secure the auxiliary sole in position while at the same time by 35 pulling rearwardly on the coupling I4 the latter may be detached from the studs I8 and the device quickly removed by pushing forward to detach the clips 8.

The foregoing will, it is believed, suffice to im- 40 part a clear understanding of the invention without further explanation.

Manifestly the invention as described is susceptible of modification without departing from the inventive concept and right is herein reserved to all such modifications falling within the scope of the subjoined claim.

What I claim is:

An anti-skid device for attachment to the sole of a shoe comprising an auxiliary half-sole having calks extending from the bottom thereof, a pair of toe clips secured to the toe part of said auxiliary sole to extend therefrom upon opposite sides of said toe part, respectively, and having hooked front ends adapted to take over the 56 toe part of the shoe sole, and means to couple the rear edge of said auxiliary sole to the instep part of the shoe sole, said means exerting a tension rearwardly on said auxiliary sole and com- 5 prising a stud secured to said instep part, and a bail-like coupling of resilient wire and bellows form pivoted to the rear edge of said auxiliary sole and hooking over said stud, said coupling 1ying fiat in said instep part to function as an antiskid device therein.

PAUL E. W'IMIVIENAUER. 

